Sprink

Thanks

All I use is a new scalpel with a new blade .. the trick that I have found for cutting foam is to use little preasure but be firm and bold
In other words severel small cuts don't try and cut through in one go and be bold and cut the line you need don't cut close and then nibble away else the foam just bobbles up and you end up with a right snowy mess

Another trick I have used in the past is to bend a piece of wire to the size and shape of the hole required (Just bend it around the servo) and then stuck the wire in the soldering iron to melt the foam ... can be a bit vague unless you have a steady hand though